Nokia 3570, 3585 サービスマニュアル
CCS Technical Documentation
Troubleshooting — Antenna
NPD-1
Issue 1 11/2002
Nokia Corporation Confidential
Page 5
Troubleshooting - Antenna
This troubleshooting guide addresses potential failures that will affect the antenna per-
formance of the phone, and discusses methods for correction of these failures.
formance of the phone, and discusses methods for correction of these failures.
Relevant Documents
For additional information, refer to the Eagle Antenna Electromechanical Specifications
(DMS03311-EN-2.0) and the Eagle Antenna Module VQD (DMS00188-EN-1.2).
Failures and Corrective Measures
Internal antenna not installed or unplated internal antenna installed
A properly installed and plated Eagle antenna module is shown in Figure 1.
The Eagle antenna module consists of the internal antenna and whip antenna as one
module.
module.
Figure 1: Eagle Antenna Module installed)
If the Eagle antenna module is missing, install one. If an unplated internal antenna is
installed, replace it with a properly plated internal antenna module.
installed, replace it with a properly plated internal antenna module.
If no internal antenna is installed, the antenna gain will be degraded by more than
25 dB.
25 dB.
Stamped contact spring clips missing/mis-installed for internal antenna
Figure 2 shows the RF feed and ground stamped contact spring clips properly installed.
Figure 3 shows both stamped contacts spring clips missing. If the either contact is miss-
ing or bent, replace antenna module with new antenna.
Figure 3 shows both stamped contacts spring clips missing. If the either contact is miss-
ing or bent, replace antenna module with new antenna.
Figure 2: RF feed and ground stamped contact spring clips properly installed